人教版四年级数学下册小数加减法混合运算专项练习题13.docx

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人教版四年级数学下册小数加减法混合运算专项练习题13.docx

人教版四年级数学下册小数加减法混合运算专项练习题13

一、口算。

3.3+0.2=6.1-3.8=0.8+0.48=3.3-0.6=

5-0.3=6.2+1.3=0.63+0.23=8.3+0.7=

6.2+0.5=6.3+4=0.69-0.31=7.3-0.7=

6.4-0.5=7.1-2.3=0.88-0.13=5.7+0.3=

2.9-0.2=9-1.7=0.61-0.25=2.1-0.9=

4.1+0.8=8.1-2.9=0.9+0.42=7.9+0.9=

5.5-0.9=7.7-0.1=0.66+0.19=5.3-0.3=

1.3+0.8=6.8-4.1=0.83+0.35=6.7-0.7=

二、混合运算。

0.79+0.04+4.45.8-0.4-1.686+32.2-39.3

70.45+21.38+89.1183.64+36.48+85.484.67+1.82+2.76

60-(9.74+0.73)79.4-(28.8+3.6)5.37+2.24+2.32

一、口算。

2.9-0.5=7.4+3.4=0.83-0.1=4.3-0.6=

7-0.6=8.4-4.8=0.9-0.12=8.5+0.8=

4.3-0.4=6.5+1=0.71-0.16=4.8+0.5=

7.1+0.7=7.7-4.4=0.89+0.03=8.8-0.7=

6.5-0.6=8.7-4.8=0.87+0.26=4.9+0.5=

4.1+0.1=7.5+1.6=0.72+0.41=7.3-0.4=

2.1-0.9=8.5-4.2=0.64-0.27=3+0.3=

4.9-0.8=7.8+4.5=0.64+0.23=8.2-0.7=

二、混合运算。

0.84+0.26+6.18.4-0.6-2.466.4-26.2+28.7

63.68-14.69+34.9979.34-19.49+57.159.07+3.37-4.17

60-(1.58+0.22)91+(10.6-3.5)4.3+1.38-2.91

一、口算。

4.6+0.3=7.7+1.1=0.68-0.41=3.8+0.4=

8-0.4=8.9-1.6=0.74-0.1=4.3-0.6=

4.3-0.2=6.5-0.7=0.69+0.34=1.2-0.9=

3.8+0.3=8.7+1=0.65-0.09=8.7+0.6=

3.8-0.8=9-1.3=0.81-0.2=2.7+0.1=

6.7+0.5=7.6-3.1=0.85+0.49=6.2-0.9=

4.9-0.1=8.5+1.7=0.62-0.4=4.6+0.7=

6.9-0.8=8.3-2.6=0.89-0.48=7+0.8=

二、混合运算。

0.86+0.22+2.59.8-0.51-2.4971.4-31.1-14.8

77.14-40.57+17.766.56-30.35+26.186.67-1.6+4.8

70-(6.77-0.76)84.5-(28.7+7.8)4.8-2.37-1.41

一、口算。

3.1-0.8=6.8-1.4=0.8+0.36=8.7+0.1=

6-0.8=6.4+2.4=0.68+0.28=5.5-0.3=

2.5+0.5=6.1-2.4=0.86-0.02=8.3-0.8=

6.6-0.9=8.3-0.8=0.65-0.44=4.1-0.8=

4-0.1=8.2+0.7=0.6+0.46=3.9-0.9=

2.4-0.9=6.2-0.2=0.75+0.06=5.9-0.9=

1.1-0.8=8.7-3.2=0.71+0.42=2.7-0.8=

4.1+0.6=8.4+3.3=0.7-0.17=8.8+0.6=

二、混合运算。

0.79-0.12+3.39.1-0.42-4.5891.2-59.4-17.3

62.39+46.56+48.461.74-21.42+75.269.76-8.1-1.2

50-(8.88+0.36)61-(24.6+7.5)9.6+6.08-1.13

一、口算。

5.9+0.6=8+3.8=0.6-0.06=2.6-0.6=

6.2-0.3=7.3-4.5=0.77+0.46=8.5+0.2=

7.5+0.7=7.5+1.9=0.83-0.29=4.2+0.3=

6.5+0.6=6.5-2=0.72-0.16=5.5-0.5=

1.5-0.9=7.4-3.2=0.67+0.07=1.3-0.5=

6.5+0.9=8.3-1.4=0.8+0.26=7.5+0.9=

6.3-0.4=8.2-1.2=0.65-0.49=6.8-0.8=

1.4+0.3=6.1+0.6=0.67-0.3=5.8-0.8=

二、混合运算。

0.66-0.2+36.3-0.78-2.2278+50.3+26.8

80.87+21.34+47.9981.9-37.1+73.537.6+2.97-2.11

20-(3.2-0.47)89.1-(23.2+4.6)5.64-2.97+2.46

一、口算。

8.2-0.8=6.6-3.3=0.61-0.49=4+0.9=

5.2+0.3=7+1.4=0.68+0.12=5.3-0.9=

6.1+0.5=7.5+1.4=0.65-0.33=3.9-0.1=

4.7+0.6=8.1-2.7=0.9+0.31=7.6+0.6=

6+0.9=8-2.2=0.64+0.28=7.6-0.3=

3.5-0.6=8.2-2.7=0.68-0.13=5.2-0.4=

7.5+0.8=6.3+1.6=0.69+0.04=6.1+0.6=

7.7-0.3=6.4-3.5=0.65-0.24=4.3+0.1=

二、混合运算。

0.65-0.4+8.46.7-0.8-2.252.3-22.4+10.9

83.47-45.44+99.4960.07-23.01+77.37.68+1.06+2.96

30-(3.87+0.91)63.6-(19+1)6.44-1.88+1.34

一、口算。

2.1-0.6=6.5+1=0.65+0.09=8.2-0.8=

6.8-0.2=8+2.9=0.76+0.31=1.4+0.8=

2.8+0.5=6.4+3.2=0.66-0.31=1.2-0.7=

2.5-0.8=7.4-3=0.67+0.16=8.7-0.8=

1.4+0.9=8.6+2.8=0.63-0.44=8.8+0.7=

5.6+0.5=6.1+3.7=0.64+0.13=2.2+0.7=

6.4-0.8=7.6-3.7=0.77-0.08=3.8-0.8=

8+0.6=8.4+0.5=0.72+0.15=6.3-0.3=

二、混合运算。

0.6+0.21+1.68.1-0.15-1.8564.8+41.9-14.2

85.03+17.82+29.0289.01+20.26+32.689.16+3.82-1.22

40-(6.59+0.42)77.4+(11.3-7.5)5.18-2.09+1.05

一、口算。

5.4+0.9=6.3+1.3=0.88+0.11=2.1+0.4=

3.8+0.2=6.6+1.8=0.76-0.3=1.2-0.9=

1.2+0.4=7.3-0.9=0.61+0.01=6.2-0.4=

6.6+0.5=6.4+2=0.83-0.23=5.9+0.1=

3.1-0.5=8.5+2.9=0.67+0.44=1.8-0.3=

6.8-0.2=7.2-4.6=0.84-0.36=5+0.2=

6.6+0.1=7.8+2.6=0.71+0.47=7.3+0.4=

7.9-0.9=7.9-0.8=0.67+0.46=8.8+0.1=

二、混合运算。

0.7+0.14+7.45.4-0.26-2.7450.9+28.7-17.4

68.46-41.85+21.6265.62-40.7+72.274.06+1.91+1.58

90-(8.9+0.61)93.7-(19+4.3)9.67+4.3-1.96

一、口算。

8.4-0.8=8.7-2.9=0.76+0.18=1.5-0.9=

5.4+0.1=7.5+3.8=0.72-0.09=6.7-0.2=

4.4+0.4=6.5+1=0.77+0.42=5.2-0.9=

2.4+0.2=8.9-4.8=0.6+0.31=4.3-0.2=

3.1+0.7=7.9+0.6=0.89-0.17=6.6+0.7=

7.3+0.9=8.5+4=0.68-0.25=1.4-0.2=

7.1-0.1=8.1-2.3=0.88+0.34=8.6-0.5=

2.7+0.1=7.8+0.4=0.64-0.08=7.8+0.7=

二、混合运算。

0.61-0.44+9.99.9-0.55-4.4581.2-10.8-17.3

81.49-24.76+51.3574.24-44.09+66.796.22-3.1-2.12

40-(1.01-0.38)97.5-(26.9-9.3)4.71+1.75-2.06

一、口算。

3.7+0.3=6.2+2.2=0.75+0.08=7.5+0.8=

4.6-0.8=8.4-2.4=0.89-0.3=1.4+0.4=

3.2+0.9=7.9-2.9=0.69+0.02=3.2-0.7=

7.4+0.5=8.1-1.1=0.76-0.18=8.1+0.7=

6.3-0.7=7+4.1=0.82+0.1=4.3-0.9=

3.1-0.5=8.9-3.1=0.65+0.04=2.3-0.2=

4.7+0.4=9+2.8=0.83+0.35=5.8-0.3=

7.9+0.1=7.1+4.8=0.75+0.18=2.2-0.4=

二、混合运算。

0.88+0.22+2.57.2-0.35-0.6535.1+13.8-12

71.06-12.49+85.3860.49+46.3+88.976.19-2.36-2.12

60-(5.32-0.33)74.4+(18.1+7.8)5.62+3.11-2.1

一、口算。

5.8+0.6=7.1+3.5=0.69-0.2=7+0.4=

1.2-0.9=8.2+4.2=0.74-0.28=8.5+0.5=

3.1+0.8=7+3.2=0.69-0.08=3.6-0.6=

8.8-0.2=7.5-2.4=0.86+0.23=1.4+0.8=

3-0.7=7+3.7=0.87-0.1=2.3+0.5=

4.9+0.8=6.4-3.9=0.81-0.06=8.8+0.5=

8.7+0.3=7.5+3.9=0.63-0.32=8.8+0.4=

8.5+0.7=7.2-1=0.89-0.15=3.3+0.1=

二、混合运算。

0.87+0.31+4.75.8-0.35-2.6545.5-29+15.9

61.61-25.39+69.9386.51-26.62+82.954.95-3.45+1.12

70-(7.65+0.51)81+(28.8+5)3.58-1.89+1.58

一、口算。

3.9-0.4=6.3-4.3=0.72-0.23=8.8+0.6=

7.8-0.4=7.2+4.7=0.8-0.03=5.9+0.9=

6.4-0.6=8.5+0.7=0.73+0.13=2.6+0.6=

4.8-0.2=7.7+0.4=0.64-0.15=1.1+0.2=

7.1+0.4=6.6-4=0.74-0.48=2.1-0.9=

1-0.9=6.7-1.7=0.82+0.09=6.2+0.1=

3.8-0.6=8.3+1.3=0.66-0.13=8.1-0.7=

8.6+0.6=7.5+3.9=0.9-0.14=1.7+0.9=

二、混合运算。

0.63+0.35+1.98.9-0.9-2.167.7-26.5-31.8

75.76+47.83+41.4586.67-19.26+40.126.27+3.84+1.09

20-(5.66+0.31)85.3+(22.1-7.9)9.55-1.43+1.36

一、口算。

5+0.3=6.4-3=0.69+0.33=2.8-0.2=

1.5-0.2=7.3+3=0.68-0.11=5.9+0.9=

5.8+0.1=8.1+2.3=0.76-0.49=2.7-0.4=

8.5+0.2=7.4-0.8=0.76+0.28=6-0.9=

8.3-0.6=8.1-4.5=0.89+0.43=6.2-0.7=

5.5-0.2=8.1+4.9=0.82+0.06=7.2+0.2=

3.5+0.4=8.9+1.3=0.73+0.43=1.4+0.5=

4.9+0.5=7.6+0.7=0.8+0.37=3.7-0.4=

二、混合运算。

0.77+0.28+1.98.7-0.75-2.2568.3-14.1-42.8

75.66+37.65+50.0976.53-36.54+42.569.96-4.51+3.75

90-(2.29+0.24)60.2-(16+9.1)5.38+3.82+1.22

一、口算。

7.4-0.3=6.3-0.1=0.78-0.38=4.1+0.1=

5.6+0.3=9-2.5=0.65-0.47=9-0.9=

8.7-0.2=7.1-1.1=0.74+0.3=9-0.5=

5.1-0.9=9+2.3=0.86+0.23=8.1-0.6=

2.9+0.9=6.1+0.1=0.65+0.28=2.3+0.3=

3.8-0.8=7.7+3=0.72+0.17=5+0.4=

8.4+0.9=6.7+3.7=0.75+0.41=6.9-0.4=

3.9+0.9=6.2+2.7=0.86-0.03=3.7+0.1=

二、混合运算。

0.81-0.07+1.36.3-0.9-1.191+37-15.7

80.14+23.14+69.7562.89+14.4+868.21+2.2+1.37

90-(8.74-0.12)70.4-(28.2-5.3)4.87-2.39+1.92

一、口算。

7.6+0.6=7.7+4.5=0.9-0.28=3.5+0.3=

4.1+0.8=8.2-1.2=0.75+0.17=7.3+0.7=

8.8-0.1=7.5+4.5=0.76-0.38=3.9+0.8=

4.1-0.8=8.9+1.3=0.62+0.02=7.4-0.4=

4.8-0.7=6.3-3.3=0.68-0.09=3-0.8=

7.4-0.5=7.5+1.6=0.63+0.47=5.2-0.1=

2+0.5=8.2+3.9=0.7+0.15=2.6+0.1=

1.9-0.5=6.1+2=0.76+0.4=4.2+0.4=

二、混合运算。

0.81-0.06+9.67.9-0.78-0.2293.7+59.5-17.3

70.33+44.79+59.4278.33-32.88+46.079.29-5.69-1.08

60-(8.86-0.98)63.2+(23.8-7.2)4-1.11-1.58

一、口算。

8.1-0.1=6.2+4.2=0.6-0.43=1.7+0.6=

8.5-0.6=7.9+0.2=0.68+0.47=4.6-0.3=

3-0.3=7.8+2.5=0.66+0.19=2.9-0.4=

1.9+0.2=7+2.3=0.63-0.49=2.8+0.5=

7.1+0.7=7.3-4.9=0.82-0.07=8.6-0.1=

2-0.1=7+0.6=0.68-0.21=3.3+0.6=

1.7-0.8=6.5+2.3=0.75+0.18=8.3-0.8=

1.4-0.5=8.3+1.3=0.7-0.1=8.6+0.8=

二、混合运算。

0.67+0.35+6.38.6-0.29-4.7145.7-25.9+12.8

68.3-31.96+81.772.94+31.03+39.294.03+1.65+2.02

60-(8.82-0.64)68.9-(18.2-9)7.19-3.53-3.25

一、口算。

6.4+0.3=7.4+3.3=0.77+0.27=1.9+0.4=

1.3-0.4=6-3.6=0.6-0.07=2.9+0.2=

5.7+0.3=8.3-2.6=0.81-0.24=5.2+0.3=

5.3-0.4=6.2-2.1=0.88+0.05=5.8+0.3=

8.4-0.5=8.3+2.3=0.61-0.45=7-0.1=

4.8+0.1=7.9+2.2=0.86+0.32=8-0.3=

4.3-0.4=6+0.2=0.85+0.37=1.3+0.6=

1.9-0.3=7.6+3.1=0.81+0.23=6.4-0.6=

二、混合运算。

0.89-0.39+4.25.9-0.79-4.2152.6+30.1-15.3

75.96-47.91+57.6461.13-37.2+65.379.21+5.69+3.26

90-(2.3+0.86)83.4-(13.7-2.9)3.61+1.83+1.16

一、口算。

6.8+0.6=8-0.9=0.68+0.13=6.3+0.5=

2.5-0.6=7.7-3.8=0.76+0.38=6.2+0.2=

1.5+0.6=7-2.4=0.85+0.12=3.9-0.1=

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